Good morning everyone. A buddy and co worker of mine called me about a problem that he’s having that I’ve never encountered. He has a Hawke scope with lighted reticle on his new 26 Nosler rifle. While wearing electronic ear muffs, he says that as he starts to shoulder the rifle, he gets frequency interference noise in his headset. The closer his head gets to the rifle, the worse it gets. He said when he fires the rifle, the scope blurs out for a few seconds and looks all distorted. After a few times of it, he switched to non electronic ear muffs and the scope was perfectly fine. Put the electronic ear muffs back on, problem came back. And it happens whether the lighted reticle is turned on or off. I haven’t met up with him yet to see it first hand. Anyone ever encounter this?
Scope issue caused by electronic ear muffs
- Thread starter Doobie
- Start date
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Yeah, he's going to need a whole new rifle 
Copy all.
Take him on a longish ride. Put him out at least three miles from his home.
If he finds his way home, DO NOT “date” him ever again...
Seriously, that weird. He needs to try new ear pro. Or just turn it off. Also need to try same ear pro and not run the red dot..eg no electronics ON in the scope.
Take him on a longish ride. Put him out at least three miles from his home.
If he finds his way home, DO NOT “date” him ever again...
Seriously, that weird. He needs to try new ear pro. Or just turn it off. Also need to try same ear pro and not run the red dot..eg no electronics ON in the scope.
He didn’t try changing volume on headset. The brand is Caldwell.
Matlack
Scribe
- Dec 15, 2008
- 8,557
There is his problem.
It does it with the lighted reticle on or off (sorry if I didn’t state that in my initial post). When using non electronic ear muffs, it doesn’t do it. We’re just wondering what is causing it and WHY.
But why is it happening? I’ve used various lighted reticles and red dots while wearing my electronic ear muffs and have never experienced that issue. We are curious as to what and why.
Probably V=iR
It sounds like RFI interference between the diode driver and the circuitry in the earmuffs. I wonder if the scope or the earmuffs could be shielded to mitigate the problem. Maybe you could see if aluminum foil wrapped around the scope or part of the earmuffs holding circuitry would help.
Doco Overboard
Ultimate Member
OHMS LAw
I was locked into the Baby Wires class against my will...it was over forty years ago.
I remembered this and “antennas are magic”. Find an expert.
Prepared me well to be an afloat COMMO
I remembered this and “antennas are magic”. Find an expert.
Prepared me well to be an afloat COMMO
onedash
Ultimate Member
Maybe some have better shielding to prevent this.
Quite possibly. We shall see. Thanks everyone for the responses. Keep em coming if anyone has any other ideas or suggestions.
He may want to put a single layer of tinfoil in the earcup that houses the circuit board if it is accessible. Test it without the rifle to see if there is no interference or noise by itself. Then try it with the riflescope on, and rifle unloaded. See what happens.
Q
Q
- Nov 11, 2009
- 30,903
I just knew tinfoil would contribute to a solution.
Attachments
- May 4, 2008
- 1,607
Is his phone in his shirt pocket?
Magnumite
Ultimate Member
Sounds like they are operating on similar frequencies. Aluminum foil trick as mentioned sounds like a good measure. Internally within the muffs, if access may be gained without damaging them, line the ear cups with the foil. You may also try wrapping the internal module and all wiring in foil then connecting the foil to the ground side of the circuit. Might just try different electronic hearing protectors.
